Math, asked by Rayyan3606, 11 months ago

If x+y=18 and xy=72.What is the value of (x2)+(y2)

Answers

Answered by rekhalko78

1

(X + y )(X+y)= X square + y square + 2 x y

18*18= x2+y2+2*72

324=x2+y2+144

x2+y2=324-144=810

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